AN ANALYSIS OF RESONANT MAGNETOTUNNELING IN THE DOUBLE-BARRIER HETEROSTRUCTURE

We study resonant magnetotunneling in the double-barrier heterostructu re in the sequential tunneling picture. The effects arising from charg e buildup in the well are considered by assuming that the quasibound e nergy in the well varies linearly with the applied bias. Under appropr iate approximations, the tunneling current density and the correspondi ng differential conductance are derived analytically. The results for the peak positions in differential conductance and the threshold curre nt position are consistent with experiments.